Last Tuesday, a guy named David Anderson was searching for diamonds at Crater of Diamonds State Park in Arkansas, which he's been doing since 2007. And he's found HUNDREDS of diamonds there. Mostly just tiny ones.

But on Tuesday, he spotted one that turned out to be 6.2 CARATS, or about the size of a jelly bean. And the park has a "finders keepers" policy. So he gets to KEEP any money he gets for it.

But instead, he plans to donate it all to CHARITY. Specifically, he's giving it to a non-profit for missionaries called Speed the Light.

At this point, it's not clear how much money he'll get for it. But earlier this month, a 14-year-old girl from Oklahoma City sold a 3.8 carat diamond she found at the same park back in October. And she got $20,000 for it.

So obviously David should get quite a bit MORE than that, since the diamond he found is almost twice as big. (Arkansas Matters / Fox News / Huffington Post)